Police in the UK have opened an inquiry into Wednesday’s friendly international between Nigeria and Scotland.

Authoritative British newspaper, The Telegraph said the police have launched an investigation into attempts to fix the friendly that is due to be played at Craven Cottage in London.

Officers from the National Crime Agency, Britain's equivalent of the FBI which investigates serious and organised crime, are understood to have asked world football governing body, Fifa to issue an alert over potential attempts to rig the game.

It is understood that the Scottish Football Association have been liaising with the NCA after the game was "red flagged."

Barclays English Premier League footballers expected to play at tomorrow's game include Chelsea’s John Obi Mikel, Liverpool’s Victor Moses and Manchester United’s Darren Fletcher. There is no suggestion that any of the players are involved.

There are growing fears that World Cup warm-up matches will be targeted by match fixers acting on behalf of illegal betting syndicates in the Far East.

A spokesman for the National Crime Agency (NCA) said the organisation “will from time to time provide operational detail necessary for public reassurance purposes."

"The NCA will from time to time provide operational detail necessary for public reassurance purposes. It does not routinely confirm or deny the existence of specific operations or provide ongoing commentary on operational activity," the spokesman said.

Fifa has detailed plans to give footballers special briefings on what to do if they are targeted by match-fixers during the World Cup.

For the first time players from all 32 competing nations will be given “integrity sessions” by Fifa officials, when they will be told to report anything suspicious via a special anti-corruption hotline available only to players and referees.

Football World Cup 2014 is now going through the semi-finals matches, just one step behind the final stage. The 4 best teams are playing their sixth match of the world cup i.e. semi-finals. The semi-finals teams come from two reigning continents of football world – Europe and South America. These semi-finals teams of both the continents will be playing against each other to decide whether the final fight will be against the two continents or between teams from a single continent.